class child extends parent{
    int x = 200;

    public static void main(String[] args) {
        child a = new child();
        a.m();
        System.out.println(a.x);
    }

    void m(){
        System.out.println(" 子类中x=" +x);
        System.out.println(" super.x=" +super.x);
        super.m ();

    }
}

